Improved brick-machine



' @abrite/*xl ,gitana ,J. KLINKHARD'T AND w. KIBURZ,

oir S'r. Louis, MISSOURI, ASSIGN- ORS TO THEM'SELVES PAUL OEHLER, SAM-E PLACE. Leners Patent No. 84,284, daad November 24, 1868.

nvrpnovnn BRICK-MACHINE.

'I lhe Schedule referred to in these Letters Patent and making part of the saine.

yTo all whom it Imay conce/rn Be it' known that we, J. KLINKHARDT and W. K1- BURZ, of St. Louis, in the county of St. Louis, and State of Missouri, have made certain new and useful Improvements in Brick-lilachines; and we do hereby declare that the following is a full and clear description thereof, reference being had to the accompanying drawings, land to the letters of reference marked thereon.

The nature of this invention is the arrangement of a double set of pressure-plungers, operating upon the clay in the moulds, and upon two different sides of the brick in its formation, thus insuring a sound and wellpressed blick, and one true on its several faces. In order to further insure a true lower face of the brick, we have arranged a cutter, which cuts ofi' any swelling which may take place on the lower face during o1' immediately subsequent to the action of the pressureplungers. The nature of our invention consists, furthermore, in certain detail construction of parts, to enable working-parts to receive oil or lubrication, and retain the same more perfectly than heretofore achieved in similar machines; all of which we will now more fully explain, in order thatallthose skilled herein may be enabledto make and use our said improved machine.

Of the accompanying drawings-- Figure l is a sectional elevation, and

Figure 2, a top plan. y

Figui-e 3 is a detail enlarged s ction, showing the sliding plungers and arrangement thereon for oiling, and

Figure 4 is a plan of a method of operating the sliding plungers.

' A represents the png-mill, which is supported upon standards in any suitable manner. The general form of the pug-mill is in nowise material. We arrange in the same the arms l), upon the vertical shaft B, to temper the clay when the mill is charged therewith. At the base, and near the circumference of the bottom of the pug-mill, isthe discharge-opening c, leading to an inclined passage, a. The screw-shaped'scraper b, rotating with the shaft B, will force the clay down into the said passage, and the pressin'e hereof, -with the pressure of the superimposed clay in the mill, will act to pack the clay tightly,and thus compress the same preparatorily' in the passage c'. From said passage, by the continuous action 'of the screws l, the clay is forced'into the mould-chamber G. This has three sides, c, which are permanent. The rear of the mould-l chamber is formed by the pressure-plunger D, the top l of the mould is formed by the pressure-plungerE, and

the bottom is formed by the'slide F. Thefseveral parts, c, D, E,.andF, are so arranged that when the same are in the position to enclose the minimum space, this minimum of space shall be the ciroumscribed boundary of the compressed or moulded brick.

. After the clay has descended from the passage a', the pressure-plunger is propelled forward, and cuts off and forces forward a quantity of said partly-compressed clay, into the space directly underthe'pluugers E. At the same time the bottom slide F moves forward, thus supporting the clay in its forwardpassage, 4and when the clay has reached its position in the mould proper, (under theplungers E,) the plungers E descend and compress the now lenclosed body7 of clay. At the same time the rear plungerD has a slight forward motion, and thus, by the joint action of the plunger D and the plunger E, the clay is compressed and moulded, into proper shape.

Thereupon the slide F is drawn back, but the plungers D and E remain, and as now the bottom of the brick isreleased by the slide F, the clay may swell, and in order that this swelling may not produce an uneven surface, we arrange, in connection with said slide F, the cutters j'. These remove, from the lower surface of the brick any swelling, and thus a true-faced brick is formed. Then the cutters f have passed beyond the rear edge ofthe brick, the plungers E descend and force the brick out of the mould, and then the plunger D also returns.

The cutters f are connected with the slide F by suitable side bars, leaving a sutcient space for the swelling of the brick. The said cutters are therefore dependent upon the motion of the slide F, being operated by the devices operating the slide.

To operate the plungers E by the cam e on the driving-shaft G, the said cam being formed to give the said plungers the motion above described, to raise the stroke, we use the spring e', or any similar device which will raise the plungers quickly.

The driving-shaft G, by mitre-gearing, operates the centre shaft B of the pug-mill, and also the shaft H, which operates the plunger D and slide F. The cams h and h', on said shaft H, respectively. act upon the rods cl and f1 of the plunger D and slide F, to produce the forward motion hereof, as above described. A lquick return motion is given to said parts D and Fby the springs d2 and f2 respectively, which "press against an abutment, d, and act by `pins on said rods d1 and f. The motion of said parts D and E may be achieved by a cam, x, acting upon a cam-yoke, x1, which is connected with the rod moving the plungers, as indicated in fig. 4. In order that the plunger may be always held up to its pressure on th'e clay, even when the cam x has a certain amount of slip or play,- caused by wear or any other inaccuracy of fitting, we use the spring 1:2, pressing upon the roda3 in opposite directions, andsustained by abutmeuts :vt

It will be seen the plunger D, in its stroke, passes under the surface K. In, order that the surfaces may -be easily oiled, we have arranged the parts hollow, and the oil may therefore be. thrown in at the opening, k, and it will pass down the oil-tube k, and lubricate a felt-lining piece, k2. It is plain that the upper surface pluugers E when they have completed their downward of the plunger D, from its Contact with elayfwould become solid, and that particles of clay would other- Wise enter and choke the oil-passage c. Similarly, to oil the surfaces of the plunger -D and the slide F, the plunger is made hollow, andthe oil passes through oiltubes, l, upon the felt lining Z', to be therefrom distribute-dover the slide F. Similarly, the plnngers E are made hollou',-to'roceive oil, and this passes the oiltubes m to the felt lining on', and thus the felt is held moist. Now, as the plunger E presses the felt lining m upon the Clay below it, the oil is thus returned, being forced back. Upon release fromvpressure, oil again passes into the felt. Itis our experience that lthe lining thus oiled produces a smooth surface upon the clay.

f G, and plungers D and E and slide F, substantially as.

set forth.

Also, the knife Af, when combined and operated with the slide F, substantiall)v as and for the purpose set forth.

J. KLINKHARDT. lV. KIBURZ. XVitnesses GEO. I. Huma-Enth., ROBERT BURNS. 

